What does the term stand on vessel mean?

The term "stand-on vessel" refers to a ship or boat that has the right of way in a navigation scenario, typically because it is on a collision course with another vessel. According to maritime rules, the stand-on vessel is expected to maintain its course and speed, while the other vessel, known as the "give-way vessel," must take action to avoid a collision. This designation helps ensure safe navigation and reduces the risk of accidents at sea.